2015 Proves That Our Solar System Is Way More Awesome Than We Realized

We already know a lot about our solar system. It’s nearly 4.6 billion years old, and consists of eight planets and five known dwarf planets, for starters.

But did you know that our solar system may have once been home to a long-lost ninth planet? Were you aware that, in the future, Mars could have Saturn-like rings?

Those are just a few of the many exciting discoveries scientists made about our solar system this year. Scroll down for eight of our favorites.

1. There are blue skies and red ice on the dwarf planet Pluto.

Ever since NASA’s New Horizons spacecraft soared just 7,750 miles near Pluto in July — marking the closest ever approach to the dwarf planet — it has been beaming back to Earth new data and images of the distant world. So far, we’ve learned that the dwarf planet has blue skies and crimson-colored patches of water ice, includes craters and mountains on its surface, and houses ice-spewing volcanoes.

2. We learned a lot about the history and future of Mars.

Scientists have long known that Mars was once incredibly Earth-like and may have been home to massive lakes and streams. However, billions of years ago, solar wind likely stripped away the red planet’s atmosphere, leading to the disappearance of its water, NASA researchers revealed in a press conference in November.

And while Mars was similar to Earth in its past, it may look more like Saturn in its future. A new study suggests that planetary rings may develop around the red planet 20 million to 40 million years from now.

3. Our solar system has a missing planet.

That’s right. Our solar system may have been home to a —> Read More